I blew a Headgasket tonight at the track 94 mph at the eighth>tuning for the up coming shootout @ 24lbs < it blew 1000 ft out and coasted thru to a mid 12. Anyway it's blown on the pass side in btwn 2-4 and is leaking externally sounds like a large header leak, no intermix of fluids. Anyway I'm debating pulling the entire motor or just r&r'ing the head(s) Which would you do???? or for those who have done this before whats the fastest way?