RB 236 vs RB250

[GP Kevo]

Hi guys, I've been thinking about the next iteration for my blue and orange street racer. I've been looking at either a Chalky tuned RB 70mm x 62mm or standard RB250 which I can source from Germany to get round any further strike action in the UK.

This will be for a 1/4 mile and salt lake speed trials engine with occasional street use. I'm going to get my GP 200 TS1 back on the road so I can have more fun on the street racer. Either of the RB's will require some machining to my crankcase (SIL GP200). Which should be my choice, a race tuned RB236 or a RB250?