Well mate you can go three ways.

1.32/36 weber good for other wise stock engine. weber $85 adapter kit $35 air filter $30-$110 fitting $50 or can DIY. tunning and jetting $70.

2.Single 40mm weber good for engine with warm cam ect.weber $400 manifold $200 linkage $50 air filter $110 fitting $100 tunning jetting $125.

3.twin 40mm webers good for warm engine all the way up to race spec.webers $800 manifold $250 linkage $80 air filters $220 fitting $200 tunning jetting $250

All prices for webers are second hand everthing else is at new price.

I hope that helps.