M117 cylinder heads from a 1990 5.0 engine onto a 1990 M116 4.2 engine? I ask 'cos the heads need a refurb on my 420SEL and rather than take it off the road for a while, I can refurb the heads on my spare 5.0 motor at my leisure and then pop them on...

If it is possible, is there any advantage or disadvantage to doing this?

Cheers, Martin

__________________
1990 420SEL 217k Miles
1975 Chevy K10 400ci SBC power!
1995 Jeep Cherokee 4.0 Limited
1997 Suzuki GSXR750 SRAD
1989 Kawasaki GT550G4