Well I ordered a 410W from Dyno-Flo and it cam a few days ago. Its a 69 Blockbored .40 over with forged Probe dish pistons and Mahle rings, Eagle 4" 4340 forged crank, Eagle 6.2" 4340 forged H beam rods, King Pro Race rod and main bearings, and ARP main studs. If I use a 64cc head my comp. ratio should be at 9.3:1 correct? Well here are pics of my new motor and progress so far. All I have to do is undo the fuel lines and then pull the motor out. View attachment 489289 View attachment 489291 View attachment 489293 View attachment 489295 Ill use this thread for my progress.