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Seen these on eBay just in case anyone is looking ...... 250838055421 ......will need to be dyno'd though as trust me they're a bugger to set up !!

It seems they are just the TBs (no 54mm velocity stacks).

Think you could be right looking at them again although can't you get some from AF1 ?

You can, but they're a limited supply and aren't cheep. I got mine new from e-bay, but can't remember who made them.

I've just had my TBs balanced by Vinnie ( Griffs mate ) down here in Cornwall and he said i should maybe look at getting some shorter stacks for mine but i think they're the ones from AF1 already or do you know if there's some shorter ? One more thing as well now i've done the exhaust mod i'm noticing all the power is about 7 thou rpm up with a good kick at 8 and there seems to be a small bit of lose from the lower rev range, is this because i've gone from a twin exhaust to a single one ?