I would think as far as the cooling system is concerned that should be just like having the heater on full.
You would need to find the right diameter hose to fit
A PITA job having to drain the system to do the job, and bleed afterwards.
Also check out:
https://www.mr2australia...mr2play/tm.aspx?m=61045 Anyway, in case you don't have it here is a pic of the SW20 turbo heater system.