Thanks for the replies,

I do want to fit the bb to the 700r.
The 350 thats in is already a chev not pontiac so hopefully wont tread on to many angry pontiac die hards.455s are really scarce here.(South Africa).

The 454 i already have is a good motor.
4 bolt main
rectangular port gm performance heads
Crane roller rockers and cam
Forged pistons
Steel crank
edelbrock performer rpm intake
hooker headers

Motor should be good for 425-450hp

I have the same in my boat and is awesome.

Thanks again for any info that will help.bearing in mind i am halfay around the world and after all this is africa so all bits and pieces need to be imported .

Regards Rob