Can the manual transmission from an 86 4cyl be used in an 87 6cyl (Page 1/1) Bruce8524m SEP 05, 10:16 PM I'm looking at buying an 87 GT with a bad manual transmission. I have an 86 4cyl parts car with a manual. Will that transmission work in the 87 GT? Gall757 SEP 05, 10:28 PM Yes. cable routing is a little different, but it's doable. fierofool SEP 05, 10:53 PM You will need the cables, slave and slave mount and throwout bearing from the donor car. Bruce8524m SEP 06, 01:44 PM Thanks for the information. Now comes the hard part. How do I buy Fiero #4 without the wife making me move out into the garage? Thanks again for your help. fierofool SEP 06, 09:07 PM I won't touch that question, but I forgot something else you will need. You will need the transmission mounting brackets. I understand that the 3 manual transmissions have slightly different mounting brackets that bolt to the transmission. I know that Getrag and Isuzu 5-speed brackets are different from one another.