yep, running a stock L67 with the z7 kit. i originally had a vs cammed motor that i thought had a bottomend rod bearing occuring but that was not the case. after sooo many diagnosing and figuring to swap in a new motor the sound was still there and finally, after replacing the zzp 2750 stall to a stock stall the sound was gone! so now i have a working vs cammed motor sitting in my garage lol. i can use that as a backup in case the curernt motor in the car now goes out(hopefully not though for a long long time *knock on wood).