Old red paint is a bugger to keep looking nice and deep. Personally I think he'll have to go some to outrun a Supra in a straight line. They are totally different cars to drive, but both awesome!!
260 bhp is relatively easy, just a chip to 1.4bar boost, which makes them rapid once moving. You can get them up to 350bhp, but you probably need a bigger turbo, rebuilt internals etc. You can strip them out to remove weight, but without a new racing clutch I think he'll struggle getting away with the stock unit - I don't bother with fast starts, as I don't want to kill it.
If I don't get my Supe back on Friday, I may be having to take it to Bovington...
J