First off, the original motor was pulled out, & a we installed a late model 2.3 from a 1990 mustang.. block & bottom end was taken to .30 over, stroker crank & rods, Balanced & put back together with the best qualityNew parts from esslinger,. The Head, is a shaved, ported, polished D port, complete roller,. with big valves both intake & exhaust, 3 angle racing valve job. double valve spring, as well as a custom made 500 lift cam.. . & it too was put back together with the best quality brand new parts from esslinger.The man you see torqing the head bolts, is my father, he is a 35 year ASE certified Auto mechanic & race car/engine builder. we have won over 20 yearly Points Champoinships on the local dirt tracks since the late 70's. & well into the 100's of races. in 6cyl. super 6, 4cyl, and rookie classes. we have also restored numerous show cars which have been seen on the tv show rides, & numerous magizines world wide.