S/B Rockers - Ford/Chevy

[What_was_I_thinking]

Hi wondered if anyone might be able to help

I am trying to figure out if S/B rockers from either Ford 289/302/351 or Chevy 262-400 will fit on a Ford Essex V6.

I think Chevy 350 might possibly be the best fit as they have a very similar rocker ratio of 1.5:1 were as Ford ones look to be 1.6 or 1.7

Anyway if anyone has a spare/old rocker they could send me so I can do some checks that would be most appreciated. Can return once I have check things over.
Or maybe someone out there knows. Obviously the guy on ebay does, but he is happy to keep it to himself.

BUT Why?? Your asking yourselves.. I want to upgrade to roller rockers. Roller rockers $80 a set for S/B from US, more like £200-250+VAT for inferior set to fit Essex here.
Saw some PRW look-a-like roller rockers on ebay to fit Essex V6, which started me thinking..Also look like S/B Ford/Chevy rockers from RPM.

Many Thanks,
David

Essex rockers on ebay:-
Ford Essex V6 Roller Tipped Rockers, Capri, TVR, AC ME on eBay, also, Ford, Classic Car Parts, Cars, Parts Vehicles (end time 23-Sep-08 20:00:00 BST)

RPM: Chevy 262-400
http://cgi.ebay.com/ebaymotors/Rolle...3623QQtcZphoto

RPM: Ford 289/302/351
http://cgi.ebay.com/ebaymotors/ws/eB...m=120305653595