Rep Power: 310

ok im overhauling a new ex head for a ex swap as part of my turbo project along with crower stage 2 cam. however im in search of a company that makes valves for our car. please list all you know of.
also if you know any company that makes the sprint/retainer kit other than crower that will help also (looking for choices)

has anyone had experience or heard any news about the kms block guard? i am thinking of getting one cus i plan on runnint 12-14psi daily.

 
Rep Power: 0

Valve spring and retainer through Crower.

 
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Eibach makes Valve Springs but they don't make springs for the d17. They can make Custom Valve Springs if you want, their valve springs are called EVS.

 
Rep Power: 310

well right now i just want a list of options, mainly because ive heard crower has had problems with weak retainers cracking.
as for companies without d17 springs, d16 springs are the same (same part numbers for crower anyway so i figure its same fore everyone)