Originally Posted by Redstang19
Well if you manage a machine shop you can take your heads and intake and port and polish them, you should get some gains from that. Or get a set of heads and intake from the wreckers do those and the valves and swap them in after.
+1...hell I wish I was able to use some of the lathes, milles, burnishers etc at my shop for my car. I'd have a lot more done if I only had to pay for materials and not labor.
You have a few options...
1) exhaust, intake, pullies, tune - basic bolt ons...add port and polish for a few more hp
2) split port swap to be around ~99-04 3.8 specs (probably biggest bang for your buck)
3) m90 and forged crank out of a thunderbird supercoupe
4) honestly for the price of exhaust and these other bolt ons for your v6, you could probably pick up a decent 5.0 or 4.6 SOHC and drop it in.
3 and 4 require more devotion and time off the road, so not sure how far you want to go with it.
You do have the shop and it's tools at your disposal, as well as a line on parts if you need them...and really parts aren't the expensive part of a motor swap, it's the labor/knowledge to do it.