how tough to put 318 in '64 Dart GT with Slant 6?

Thanks for all your input, guys. I went "shopping" yesterday by following a couple of Craig's List ads. I ended up bringing home the following:

Hurst 4-speed shifter w/ knob
Connecting rods to transmission
Lever plate (bolts onto trans)
3-speed OD trans (short tail, iron case, from a car)
Pedal assembly w/ "down rod"
Bell housing for trans to 273 (from a car)
Complete 273 w/ oil pan, heads, harmonic dampener, motor mounts, and valve covers

I coughed up a kilo-dollar for all of it. It may be too much money, but it reduces the number of specialty items I'll need for the conversion. I'm going to abandon thoughts of hotrodding the /6 simply because converting it to a 4-speed car would be frought with a whole lot of PITA hurdles. I'm going with the 273 w/ manual trans.

I'm going for the small motor for two reasons: 1). I've never been a total car speed freak, since high school. My first car was a (is a) '57 MGA with a 1500. Not a real head snapper, but that's where my head has been for all these years. Stylin' and profilin' with my elbow hanging out the window just doesn't flip my trigger 2). I get all an acceleration junkie can ask for with my '08 Triumph Rocket III Touring. I've got this 850# bike up to 140 RWHP and 153 ft.lbs. If I don't concentrate on hanging on when I hit it, it'll leave my *** a crumpled heap on the concrete. That's enough for me.

I've also never been one to believe in creating a trailer queen. I don't care if the overspray on the underside of the car is "correct". I adhere to the idea these cars were designed and built to be driven, and that's exactly what I'll be doing with this one. Rock chips happen. I'll concentrate on stuff below the water line and make it right with upgrades to safety, handling, and drivability. A 273 w/ 4-speed, high-comp pistons, 4bbl, RV cam will be enough for me.

One of the things I looked at yesterday was a complete power steering setup from a '64 Valiant w/ a /6. Pump w/ pulley, gearbox, pitman arm, cross link, and column including wheel and turn signal. After some reading, I think I need a different cross link, but I'm not sure. There is also a question as to how the gearbox will mount to the frame. Got any suggestions? SHould I take a pass on this? He wants $200 for all of it. One friend says the gearbox core is $80 alone.

Thanks for your response.