Swaps that work in a 2gNT DSM: The shortblock from the 96-99 DOHC Neon is identical to that in the 2gnt. The head is backwards, and will thus require the head from a 2gnt, Avenger, or Sebring. The 96-99 SOHC Neon block is the same, but uses dished pistons which will lower compression if used. Requires 2gnt/Avenger/Sebring head. 95 Neon SOHC bare blocks have vents hole cut into a shelf on the side of the block, these will need to be plugged for any 2gnt use. 95 420a and D4RE blocks have an offset bearing notch in the main web. A new notch should be cut if you wish to use the common 96+ main bearings, otherwise you could use two sets of 96+ bearings. The 95-99 4cylinder Avenger and Sebring has the same deluxe longblock as the 2gnt. This is a direct swap. The 2.4L from Cloud cars is very doable, and can fit with a little modification. More 2.4L swap info can be had courtesy of our friends at 2GNT.com - home. The SRT-4 engine. It's a difficult and time consuming process, but it can be tastefully done with enough care and patience.*1 *2 Swaps that do not work in a 2gNT DSM: The DSM 4g63/4 requires a lot of fabrication and rewiring to fit. The consensus from those who know is that it is not worth it. Take our word for it. The Evo 8 4g63 faces the right way, but requires a lot of fabrication and rewiring to fit. The consensus from those who know is that it is not worth it. Take our word for it.*3 The 6g72 requires a lot of fabrication and rewiring to fit. The consensus from those who know is that it is not worth it. Take our word for it. The 2JZGTE, RB26DETT, VQ37, K24, B16, SBC, P&W R-4360, &c... will not fit without ridiculous fabrication and wiring. Don't ask us how to do it - we just don't know. *1 An A855 (SRT-4 engine) swap was done years ago, but a hole had to be cut into the hood to accommodate the motor. Ref: http://www.dsmtuners.com/forums/hangout/307399-what-do-you-think-2g-srt-4-swap.html. *2 Another A855 swap was recently finished. The engine fit without resorting to cutting holes in the hood, but the swap did require a significant number of custom fabricated structural members. Ref: http://www.dsmtuners.com/forums/dsm-build-journals/405716-99-gs-srt4-engine-swap.html. *3 An Evo 8 swap is being done, but in the end you have a stock 4g63 and a whole lot less money. Consider the purchase of a GS-T. Ref: http://repo.jackmoves.com/v/shawn/Eclipse/evo_swap/progress/.