Neil,
I had a friend who put 265's in anything and everything. Late 60's Cortina's were his favourite, but he also did LC/LJ Torana's and EH/HR's. The 265 is a strong, powerful engine, and with only minor mods to head, cam, exhaust, carby's (Square Bore Holley's were almost always used) , he could get these cars into the low 12's with truck like reliability and only using a 3 speed gearbox!
The only issue was that the 265 engine is about (
from my memory but someone might confirm ) 3" longer than the Red motor. This always meant firewall mods - in the LC/LJ the changes required were fairly drastic.
Cheers,
Craig.