10 sec. 318?
The 318 can be built into a 10 second engine, but the cost and effort is hefty on the back end. Streetabilty/manors etc.... You'd have to gear it preety high and stall it really high, then lighten the car up a whole lot.
The V6 to 318 swap is preety easy. But, IIRC, there is a issue with the tranny. It will bolt up, but I think the issue is with the converter and the crank depth or something like that, I forget. I also want to go this route later with my V6 Dakota.
I love the idea of a F.I. HEMI swap into a older car. You have hit the head n the nail real good IMO with fuel injection/drivabily and ease of use with programner aids, it just keeps getting better and better.
Once you bolt on a hair dryer, you'll be barfing out 550 HP with a cam change and headers alone. There is a forced induction section here. SCDE stops in. They do turbos themselfs, which is another great route to think about.