Just wondering what size weber i should get to put on my 89 TN??? any sudgestions?? links to ebay would be great

mate you should really do a seach in the forums for 'weber carby' theres been heaps of info on this subject.

but a weber 32/36 DGV, DGAV or DGEV is a good start, or an XF falcon carby (34ADM) is a good one too.

2 barell or single? which is beter what can i put on?

both are 2 barrel progressive carbs. which means 1 barrel opens at low throttle inputs to give good fuel economy, then the other side opens when above around 3/4 throttle input to give good performance.