Now that we've heard from the right coast, how about one from the correct coast.

Personally, I don't care what flavor your Willys is, but I do like the '40 grille better than the '41.

So, for your question. I think it comes to how you plan to approach your project. I haven't done either, but I try to at least observe what's going on, if for no other reason than natural curiousity. That's what's interesting about Streets, he's about as curious a sort as you'll find. The Ram Jet is your basic, old faithful, small block Chev with an FI system designed completely as a retro fit item with ease of installation in mind. It uses an add on fuel pump, and a "simple" controller borrowed from the marine division shelves. The LT is a slightly different version of the OFSBC, and requires more adaptation as far as controller, and harnesses, as well as fuel pump. Both are going to require similar fuel system mods, and accomodation for the electronics. If you're going to use one of the transmissions that come with the LT then the controller is available to deal with the lock up converter and the shift patterns (internal, not linkage). The Ram Jet isn't set up to control the trans, which, depending on your plans, either gives you more flexibility, or falls short of your needs.

Then there's the looks thing. The Ram Jet looks something like the old Rochester mechanical systems of the late '50's. The LT is thoroughly modern, in a GM sorta way. If you're going hi-tech the LT would look more appropriate. If you're going nostalgia, then the Ram Jet can be made to look more appropriate.

I don't know this for a fact, but if I had to guess, the LT probably would cost more to install, that is, not counting the basic cost of the engines themselves. I say that only because the Ram Jet is intended for replacement of none FI situations, and the LT isn't, so the LT requires modification which usually adds to cost.