Bump. Just found this....

Swapping the LE-Jet fuel management over isn't a great idea. LE-Jet has very little flexibility built in, and the extra displacement of the B21A may be enough to make it run unhappily lean. Or it may not. It's an unknown, at the very least. A touch more fuel pressure (via an adjustable regulator) is probably the best way to rectify that, but you'd ideally want a wideband to set it up properly.

I believe a B21A will have the same cam as a B200E (both an 'A' grind), so that should't be such a concern. I'd happily run either ignition system...I'd do whatever is easier...which is probably Renix. The later Renix setups are pretty retarded (pardon the pun...), so they shouldn't give a problem with pinking.

cheers

James