hummm, interesting input, I appreciate it , am I incorrect to think it would be "easier" to convert a magnum to solid roller? My current combo is a stock 5.9 short block with the exception of KB pistons, Hughes hyd roller .576/.587, 1.6 rockers and straight out of the box Eddy's, car weighs 3080 with me in it, 4.10 geared 8 3/4, leaving at 2000, shifting at 5800. Best 1/8 mile time (only 3 passes so far) is a 7.28@97mph. Need to be running 6.50s next year to run the new 6.50 index class, thanks again for all the input