[PJS50]

All you guys are awesome...
Ok... Now let me throw a wrench into this...
I was reading more yesterday and didn't realize how easy is seems to make a 390 into a 410 (with a 428 crank right?)
Is this really as easy as it sounds? No bottom end machining needed? Does this dramatically change engine balancing issues (428's were internally balanced like 390's?)?
In my reading, this simple change can yield an additional 5% to 8% more power...?
Are there forged 428 cranks available?
Is this worth the effort?
Also, does anybody have a source for the Erson roller rockers? It appears that Summit stopped selling them, or at least pulled the items from their catalog both paper and online...
Back when I was building my '67 Mustang motor PAW used to have a lot of supplies for FE's and everything else. They haven't gone online yet however... The last catalog I have from them is dated 1987...!
See what I mean when I said it has been a while since I have played with this stuff...!