In need of a little help

[greygoose]

First off,hope that every one enjoyed the Christmas....I'm on a tight budget,and honestly I'll be getting a lot of parts second hand,but that's all right with me.What I need to know is,what cars or trucks have a 4 barrel intake manifold and carb setup I could use from the junk yard.To replace the 2 barrel setup that I have now on the 307? If anyone knows of a drop in replacement(so to speak)that would be just great.And another question,some spark plugs have oil on them but it still fires up good,should I just take the heads off and do all the valve spring seals and leave it at that or do the whole motor.My future plan is when I get everything else done is to do a nice engine and trans swap,so if I can avoid doing all the work to this motor now,it would help me reach my gold that much faster....Thanks