Hmmmm.....for me it's a toss up. I guess what Ben says makes sense from a build stand point but doesn't part of the equation have to do with after it's done? I think the real question before ANY other question can be asked is what will the car be used for? 3Kids you probably said it in your first post but I'm to lazy to go look for it!

If the car will be strictly a cruiser, going to and from car shows and occasionally running some twisties in the canyons, then bolt on all the way. If this car is going to see any serious track time then I say C-4! I haven't added Drag to the equation since I am under the assumption that this is not the direction the car is being considered for. As far as the wheel cost issue, if you go C-4 you'll probably have to go with stock 'vette wheels in the stock offset since there won't be much room to dish because of the difference in width of the Nova front end and the 'vette front end. I know I'm getting ahead of myself but what kind of engine are you planning on putting in this beast? Are you planning on doing an engine set back(Wouldn't cost much to change motor mounts since front clip is out of the car although you would have to cut open firewall and trans tunnel to make it fit!)