Sounds good, Phil. I'm glad to hear you have empathy for the differentials!
My gut feeling is the transmission should be good for an extra 80 hp or so, without getting brittle, shall we say.
But heavy abuse will break anything, so careful is the way to go.
Take care man
Joe
__________________
Black Betty [Bam a Lam!] '93 UK spec, still languishing
Betty
Jersey Girl Silver '92 UK [Channel Isles] 40K
Jersey Girl @ Mersea
Candy Purple Honda Blackbird
Plum Dangerous
White X2 RVR Mitsubishi 1800GDI.
Vantastic
40,000 miles Jersey Girl