This is why you want to stay away from 351M 2V heads, 75 vintage or later. Take a good look at the exhaust port for those heads - the red line is the approximate shape of the early model port:
The D0 and D1 heads are good 2V heads. As I said - there is no intake for the C head on a W block swap. The C manifolds do not fit because the W has a higher deck and the rear sealing surface is not the same between the two blocks. Price Motorsports sells adapters - add about $225 to the cost of the intake for the adapter. You can hunt one of the used Bush swap intakes - expect to drop $450~550 for it. You said "budget" - no budget swap here.
<font size=-1>[ This Message was edited by: ckelly on 2/2/05 10:45pm ]</font>