Well... I've told you before that it isn't likely that you will pass smog with an MK1.5... but you can give it a shot.
For motors... I would go in this order.
JPR Motorsports
La Habra
562-690-9316
Ask for Jimmy - Tell him Russell with the red MR2 sent ya

.
If he doesn't have one try his brother...
R1 Motoring
San Gabriel
626-282-7226
Ask for Raymond - Tell him Brandon with the Silver NSX sent ya
Next up in line would be...
C&T Japanese Engines
Ontario
909-923-5589
Ask for Dennis - tell him Russell (ishcoleobo) from the boards sent ya.
ETL Garage (gets a lot of his stuff from C&T)
La Habra
909-802-3156
Ask for Jeevy - tell him Russell (ishcoleobo) from the boards sent ya.
No luck STILL!?!??!?! (not sure if he always has motors on hand)
MR Inspire
Irvine
PM Me for a cell #.
Ask for Sky - Tell him Russell sent ya.
Desperate??? I hear good things, but their prices are steepish.
Integrity Auto
Pasadena
626-449-6035
Ask for Danny - tell him Russell (ishcoleobo) from the boards sent ya.
If you are looking to have work done, I would go strait to Sky or Jimmy. Great prices and quality work.