1hotdawg
+1y
Carbing the Kia would be a real waste of money and time I'd think. If you're going to go that route, I'd just 302 the truck.
My swap experience: I spent more than I probably should have for only a slight power upgrade, but I do have a bit more of an odd set up vs. most. I purchased a Bongo 1.8l 12 valve engine from Canada that had already been in a B, with the MSII set up. I spent $1,500 on the engine/ECU and another $500 or so to get the rest right, (electric fan, Walbro 255 fuel pump, Innovate AFR, bits and pieces). If I had it all to do over again, I might would go with the Kia or the 302...probably a carbbed 302.
My advice would be this: If the truck runs great as it is, keep it as it is. Put your money into making it look the way you want, I.E. lowered, bagged, painted, w/e. And put some money toward a different vehicle for speed.
Most anything you do with the truck, especially the stock motor, you're going to be disappointed looking for speed vs. dollars. I did the header, webber and exhaust route (I went Holley), and didn't gain much seat of the pants speed. My lil bongo is better but not a whole lot, (you have to get'r up in the upper RPM's and I don't drive like that...it's a truck not a Miata).
Even the 302 swap is going to cost some serious money. You'd have to source a good running 302, and that's probably going to be in the $1000+ range, get a bigger radiator, more $$$, shorty water pump, $300+, trans that's good, $300-$500, 5.0 motor mounts, $50-$100, LTD oil pan, and whole lot of small bits and pieces that will run the $$$ up more than you'd think.
Kia swap is a whole lot of pieces as well including finding a good running engine, preferably with low miles, which depending on where you live will cost you between $300-$1000, and still have a lot of other things to change costing you more and more...EFI fuel pump, electric fan, exhaust, etc. etc.
If you've got a good running truck in which the motor is not on its last leg, keep the old motor running as long as you can. Cheapest, most reliable option. Low and slow is the motto in these things. Enjoy the look of the people staring at your ride as you ride by casually chillin
Oh yeah, I said if I had to do over again I'd have gone 302. Correction, what I really should have done was have the old engine's valve seats redone and if that didn't clear up my smoke then have the block rebuilt. I also should have went straight with a Weber kit instead of piecing together the Holley, cuz I still had as much money without some of the features of the kit, involved. I'd probably still have A/C too .