whats the best way for me to empty the radiator without a mess?
in the past iv used the heater hose but its just not pratical

whats the most easyest way to do it without makin a mess like a pro

 

Drop the windage tray and use the lower drain plug on the radiator.

 

hehe that was qwick

thanks

and also would a fb engine wire harness connect to the sa main harness?

 

No, they go through the firewall on opposite sides, iirc. Find the FSM wiring diagrams for both years and you can probably wire around it. I would switch the carb, intake and harness to match the year of the body, then you won't have to deal with wiring issues.