and KB's are hypers that have been T6 heat treated. Makes them stronger then a normal Hyper. I have had good luck with them, just follow the instructions and easy on the timing.
Chris
Summits website kinda sucks sometimes. Just because you don't see it there doesn't mean they don't have it or can get it. If you know what you need, which you do, call them to have them do a search. 90% of the time they have most "normal" stuff.
If you have a stock application, cast or hyper. pistons are OK.
Forged are good for high compression and HP applications (i.e. high RPM, blower, nitrous). They are stronger but also heavier and more $$$$$$$.........
I ran cast pistons with a small NOS for years. Held up just fine with 8.0:1 compression at low RPM.
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