from what ive read, any of the top end pipes worked well, the CPI did really good with a bit of a better midrange curve than the shearer, but the shearer made a few more hp and pulled longer. they all put the T5 to shame. (low rpm as well)
i dont know how the rockets would go, if the cpi did well, i guess the rocket will do too. i reckon 33's as a minimum.
build em for pump, they seem to like that and not to much timing advance.
it will be good when all of these servals are out and about, so we can see what setups work well.