Im sure stroker was joking with that solid roller, your not going to be able to do much with 3.23 gears, if you want to play it safe, i'd go with the XE274H, but you may want to find out what kind of converter you have, it'll give you a choppy idle, but will work with 3.23s & a stock converter, it'll run much better with 3.55s & a 3000 stall, just consintrate on your timing/curve/jetting, they will give you high benifits with any perf. cam.