Not really, even if they milled them a decent amount you can run a thicker head gasket or enjoy the boost in compression if Lloyd has to mill them more.

I bought my built 383 LS1 motor for 2400.00. My car dynoed 480rwhp.. Point is you can probably find a great deal on a built LT1 and have a blast with it.

The 10bolts suck in our cars but in mustangs its the tranny that sucks. Pick your poison.

If you choose to go the N2O route, I have most of the stuff you'll need that I'd be willing to sell for a good price, including a full 10lb bottle. LMK.