Very nice Celica! emails some pics to the Fast 4's guys when it's finished
Best bet for that lil Van would be either a 4AGE, CA18DET, Mazda BPT(TX3's etc) or a Pinto 2L which has been warmed over a little bit. These engines are all relatively the same size
The SR is phyically too big and it would be a huge amount of work to fit into the car.