http://www.engine-swaps.com/Pages/Products.html
pick up a set of these motor mounts..letting you keep your stock K member, save a ton of work and money.
you're immediate parts list for a v8 swap
engine
torque converter
tranny (bellhousings are diff)
driveshaft (new or recut and welded)
8.75rear end if you plan on anything more than a mild 318
motor mounts
headers
now all of these parts you can spend whatever you want on, pending buddies, luck, spare parts.
example:. a torque converter can be had for $50..or 500...you get what you pay for..performance gains at the track are tremendious with a good 3000 converter (ATI, TCI)..but for street use, a decent 2500 B&M can compromise for 200)
remember stock and reused components only go so far with performance in mind (converter,gears,ignition components)
a stock slant six will run a 19.00 quarter mile with hwy gears( for the street racer above that outran some geo's.lol)
the best a (my) moderate 318 will do is 14.00, 3,91 gears.
paid 900 for a complete, running, 318 with an intake, cam, carb, headers, polish/port
paid 400 for a 727 tranny plus rebuild
200, completete rear end with posi, 3.91's
200 custom driveshaft
new ignition components/dist 300ish
so basically you can run 14's for another 1900-2300 plus a ton of elbow grease.
i dumped this setup for a 408 stroker, (4000 motor by itself, 900 ATI converter)....to run low 11's,
long story short, you're best bet is a mild 318 or 360 swap if you want any form of (performance) on a budget...even with a milling, cam, super six intake, and all the sixer go fast parts, you're gonna still be driving a 14.50-16 second car pending your budget, fastest streetable /6 i've seen ran a 14.30, with a full bodied car, and that motor was worked, been racing a long time, built alot of mopars...smallblock is the way to go.