the stock precision 6262 that zzp uses in the z3 and z7 kit comes at 6.5 pounds, on an l67 it'll probably make right around 260-280ish with as conservative tune as possible, id never cross the 300 mark on stock tranny because i know 1 hard launch and that's a wrap for the tranny, 280 would be pushing it probably at 250 or 260 i can squeeze out enough time for me to no longer daily the car, buy a beater and start saving up for the trans