Aku, not a terribly intelligent thing to do and a retrograde step.
I know alot of Blue oval boys worship anything Ford makes and look down their noses at anything from the leaper (I'm coming across this right now in Michigan with Ford retirees) but the reality is that the Ford V6 cylinder head doesn't flow as well, even the SVT one, the valvetrain is roller finger follower with higher valvetrain inertia, the included valve angle is much larger (something like 50 degrees) which leads to a slower burn and the cylinder heads themselves are bigger than the Jag units.
The Jag units also have variable cam phasing as standard.
I was contacted by the SVT/Ford team when the Jag heads were released for them to try to glean ideas.
2000 MY Jaguar XJR
1972 Jaguar XJ6 series 1
2007 Cadillac Escalade
2003 MY Dodge Ram 5.7 Hemi
1995 Porsche 911 Turbo (993)
1982 BMW E21 323i
1970 Dodge Challenger 440 cu in R/T
2006 Aston Martin V8 Vantage
1985 BMW E24 M635CSi
1964 MCI MC5 Greyhound Bus-RV conversion