I compiled this from previous threads and research. Hope this helps find what you're looking for.
This info and these part numbers are for the QA-1 Stocker Star shocks. These are the most widely used shocks for our trucks and includes info on single adjustables, double adjustables, and "R" series race shocks. Info on Proma Star shocks (coil overs) and non-adjustable shocks is not included here.
Old part numbers are listed here so you can cross reference to the new number. The new part number is in red.
All QA-1 Stocker Star shocks used to be 12 way adjustable. They are now 18 way adustable.
Front Shocks:
Old Part #: HAL-TC1914P TS505
Internal Design: Twin-tube
Adjustable: Yes
Gas Charged: No
Bushing Material: Polyurethane
Bushing Color: Black
Boot Included: No
Extended Length (in): 13.500 in.
Collapsed Length (in): 8.750 in.
Upper Mount: Stud
Lower Mount: Bar pin
Notes: Single adjustable. Adjusts both compression & rebound equally. 18 settings. These are the shortest QA-1 shocks made in the Stocker Star series. They work for stock height trucks and some lowered trucks.
Old Part #: HAL-DTC1914P TD505
Notes: Same description as above, except these are double adjustable. Adjusts both compression & rebound independently. 18 settings.
Old Part #: HAL-RC1914P? TR505
Notes: Same description as above, except these are single adjustable and only adjusts rebound. The compression is fixed at firm. 18 settings.
Rear Shocks:
Old Part #: HAL-TC1539P TS901
Internal Design: Twin-tube
Adjustable: Yes
Gas Charged: No
Bushing Material: Polyurethane
Bushing Color: Black
Boot Included: No
Extended Length (in): 23.870 in.
Collapsed Length (in): 14.870 in.
Upper Mount: Eyelet
Lower Mount: Eyelet
Notes: Single adjustable. Adjusts both compression & reound equally. 18 settings. These are for stock height trucks and trucks lowered up to 1" in back. These should come with 1/2" and 5/8" insert sleeves, if the eyelet is too big.
Old Part #: HAL-DTC1539P TD901
Notes: Same description as 901 above, except these are double adjustable. Adjusts both compression & rebound independently. 18 settings.
Old Part #: HAL-TC2501P TS703
Internal Design: Twin-tube
Adjustable: Yes
Gas Charged: No
Bushing Material: Polyurethane
Bushing Color: Black
Boot Included: No
Extended Length (in): 19.000 in.
Collapsed Length (in): 12.250 in.
Upper Mount: Stud
Lower Mount: Eyelet
Notes: You'll need conversion kit # SS300LT for the upper mount. Single adjustable. Adjusts both compression & rebound equally. 18 settings. These shocks work with lowered trucks with the Hotchkis set up. These should come with 1/2" and 5/8" insert sleeves, if the eyelet hole is too big.
Old Part #: HAL-DTC2501P TD703
Notes: Same description as 703 above, except these are double adjustable. Adjusts both compression & rebound independently. 18 settings.
Old Part #: HAL-TC1576P TS504
Internal Design: Twin-tube
Adjustable: Yes
Gas Charged: No
Bushing Material: Polyurethane
Bushing Color: Black
Boot Included: No
Extended Length (in): 16.380 in.
Collapsed Length (in): 11.000 in.
Upper Mount: Eyelet
Lower Mount: Eyelet
Notes: Single adjustable. Adjusts both compression & rebound equally. 18 settings. These shocks are for trucks that are slammed in the rear. These should come with 1/2" and 5/8" insert sleeves, if the eyelet hole is too big.
Old Part #: HAL-DTC1576P TD504
Notes: Same description as the 504 above, except these are double adjustable. Adjusts both compression & rebound independently. 18 settings.