www.losipartshouse.com is where ThunderbirdJunkie normally buys his Losi parts. Now, the springs are not in that list, since we don't know what springs you should run with Losi shocks on an Associated truck with no track info. If it were ThunderbirdJunkie's truck, he'd run the kit-supplied AD2 shocks with the pistons shown in the in the instructions, 35wt all aorund and red springs front and rear.
Don't recall Losi ever offering their race shocks assembled.

Here's the AD2 instruction book, just skip to the shock section. Alternatively you could look at the XXX-T MF, MF2, and CR instructions, all the same...you may get a better baseline setup if you use the electric truck shock setups and go a hair stiffer front and rear for the springs.
http://www.losi.com/ProdInfo/Files/X...AD2_Manual.pdf