If you are looking to build or put a turbo on an MR2 Turbo or an MKII MR2 with a 3S-GTE swapped in, try Kris @ KO Racing. He knows his stuff when it comes to MR2's, and has several nice turbo kits and other products available.
KO Racing
KO Racing
(503) 496-0563 Days (9:00 AM to 5:00 PM PST)
(503) 730-9917 Evenings
If you don't get an answer at the Day number, try the evening number and leave a message.
Technical E-Mail Contact:
kris@koracing.net
Sales E-Mail Contact:
sales@koracing.net
Here is the link to their MR2 products
KO Racing MR2 Products
They Offer 3 Turbo Kits. One with a choice of the GT28RS or GT2871R, one with a choice of the GT30R or GT35R, and one with a T3/T4 turbo.
KO Racing Turbo Kits