I started with an SR5 with a 4AC. Had fun with it, then swapped in a 7AGE with carbs. The fuel system is easy, you'll need a low pressure fuel pump, i using a Holley red label pump and regulator. For electrics I'm using a 4AGE dizzy, MSD 6AL and MSD coil. All of the information you need to do the swap is available on the old site, you just have to look for it.

The hardest part for me was finding a 4AGE bottom end since nobody wants to ship a whole engine (can't blame them) so I used a 7AFE bottom end with a 4AGE head.

Not as gone as you think.
http://web.archive.org/web/201204181304 ... ub4ag.com/

Take a look at the links I posted here: viewtopic.php?f=9&t=1140

That will give you an idea of the work involved.

IMO its cheap to get a GTS then a GTSR5.

Only time I would get an SR5 is if you have a wrecked GT-S already to get all the parts from

Max