I have a 97gt convertible automatic I P head on it. I run 14.1 in 1/4 My hp is 222hp tq256. I don't think the guy knows how to run the dyno real good! What i want to know. Do stroker kit add good power like 40 to 50 hp. I see a kit for $2000. A 5.1 kit a 3.625 bore and a 3.750 stroke crankshaft from Coast High Performance. do they do good work?