wow, nice answers. The EF 1988-1991 Civic Si hatchback has 105-108HP non-vtec motor and a close ratio 5-speed tranny. The EG 1992-1995 Civic hatchback come in many models best for out of the box perfromance is Si since it features a close ratio 5-speed unlike the DX,VX,CX.Stock EF Si and EG Si:First buy a clean car, no rust or ricer stuff. SOHC D16A6 EF Si and SOHC D16Z6 Vtec EG si are great motors both can handle boost like a champ 6-8psi on a tune motor and a T3 can make 220-230whp. The D16A6 motor can use a pep'er cam liek the one found in the ZC, Delta cam.com well sell one for under $100 and offer 10-15 more whp. Built bottom ends $1200 and this motors can boost 14psi on 93 octance and C16 race gas on weekends 18psiExample. My friend delsol si SOHC vtec has rods and piston ran 11.8 123mph in the 1/4 on slicks and prep, image a car that weighs less then that. Cost under $4000 to do everythingSwap:Any B-serious is bolt on with motor mounts, shift linkageH-serious and K-serious require you to cut a little.On cars, EF is OBD-0 and Si is the only multi-point, all EG's are multi-point which is better for the swaps, all EF's are multi-point