The kit will fit our motors obviously but its the clearance that causes most header issues. Either the exhaust header is too close to the radiator (vs the MR2 firewall) or the header (intake or exhaust) wont clear the hood or firewall. Get measurements. If its a kit from an MR2 service provider then maybe you can call and ask otherwise get measurements and base those compared to stock measurements.
Just by looking at it I think it will clear both the rad and hood.