Here's the part list to build the DM1 shocks. They were listed on another site and the poster said if you call Nitrohouse they will know what you need.
40630 - Plastic parts needed for the front shocks
40090 - O'rings
40736 - DM-1 Bodies w/ Caps
40737 - Shock Shafts w/ Pistons
40634 - Shock Spring Adj. Collar
40636 - O'ring for Spring Collar
40640 - Shock Bladders
MUGE0505 Springs
MUGC0594 Springs