engine swap or supercharger?

http://www.quadratec.com/products/51107_50X_PG.htm

Anyone have any thoughts on this? I'm looking for more out of my existing 4.0 and I know performance will only get worse when I increase to 35's or 37's. I was thinking the attached or a supercharger for my existing 4.0 and maybe a switch to a manual transmission.

Also, anyone know what a 4.0 from an 04 TJ with 21k on it would go for?

i think the 258 crank has to be shortened on one end to fit the 242 block and the piston rods also need to be changed. ive thought about piecing a stroker kit together but buying a kit seems easier. hesco makes a good stroker with 2 or 3 different options.

http://www.jeep4.0performance.4mg.com/stroker.html

according to this link which i originally found on a 4x4 magazine site (cant remember the original site was about 2 years ago) there is a length difference in the 242 and 258 cranks http://www.bc4x4.com/tech/bryce/stroker/assembly.cfm

I love all this talk about stroking the 4.0L. But it doesn't make sense putting money into an engine like that. go to http://www.jegs.com and take a look at the crate motors they have. In my opinion, you'll get a much better base engine to put money into for less money than the stroker kit. In fact, the fully assembled chevy small block will already make more power than your stroker motor, and have much more room to grow. I know they come with a carbureter, but it just seems like something worth putting money into to me (plus you can always change that).

Salvatore Giglia

I have to agree, as wonderful as 4.0s are they are not powerblocks. They're more long-term investments. If you want power you'll need to switch to the 350 - its cheap, easily modifed, and readily avalible. I've been looking at the 4.6L strokers for some time and the one word I haven't heard associated with it much is "reliable." Home-built kits apparently need some serious knowledge to properly setup and its not as easy as "swapping the cam" (like many, many websites preach.) A knowledgeable machinist is a must.

If you're looking for a small boost in HP a mild supercharger is the best way to go - little modification, no real wear on the motor, and if it doesn't work you can always unbolt it and sell.

thanks for the input...............anyone know of any shops that are semi local and have expereince swapping V8's for 4.0's? I'd like to get a better understanding of the overall cost (i.e. what else do I need to replace when dropping something like that in)

looks like a mute point for now. I think I have come across a suspension kit at a great deal that's going drain the funds for now.