Think I will run into problems ptv wise w my cam if I ran gt40x heads? I have speed pro flat tops w reliefs. Cam specs- comp 35-440-8 duration @ .050" 220 in and ex 281 advertised,.512 lift in and ex, lobe sep angle 110* I won't be installing heads myself due to lack of garage. I realize one should clay it up to measure but it would suck to oreder heads pay labor to have er torn down to get clayed just to find out it the heads wouldn't work.