don't use the b4 shocks on the rc10 they'll cause the rear universals to eat up your outdrives. they're not long enough.
it could be done, but the fronts will be an issue. unless you get a larger front shock tower from ebay or some where else. the rears could be matched with threaded 1.32" shock bodies part# 7415. depending on what you're going to do with your buggy, race or bash you could go with either the 1.02" shaft or the stocker 1.32" shaft. i would recommended the gold 1.02" shaft part# 6417. for the fronts, if you find the shock tower, you could do the threaded 1.02" body part# 7414 with gold 1.02" shafts. or the .71" shafts part# 6418. contact this guy on ebay...
kuongkw . he makes shock towers for the rc10 in carbon fibre. his front shock tower allows you to use .89" shocks up front. if you go this route you could get some threaded .89" bodies part# 9312 and the .71" shafts. and your set. i recommended this route because finding a longer shock tower for the front would take you for ever and you'll probably pay a stupid amount for it. wouldn't be worth it. just contact the guy for the front shock tower, and maybe the rear too, and get your 1.32" and .89" shock bodies and you'll be set.