Latest 440 Source Stealth head set

We were asked to do a pair of the standard 440 Source Stealth heads, good to .750" lift, for a 451 stroker in Iowa. When we first spoke he wanted 600 HP with a turbo charger. He has since revised his attempt to 750 HP normally aspirated on pump gas. The latest standard Stealth offerings from 440 Source come better bowl prepped and have better OOTB flows than we have seen previously. This is what we shipped a week ago.

Lift.............OOTB................ported

.100...........73/60.................80/67
.200.........151/122..............157/139
.300.........214/165..............220/190
.400.........245/196..............269/228
.500.........262/218..............306/255
.600.........276/220..............334/275
.700.........281/236..............345/287
.750..................................345/293