Hello folks. There is a 1987- 3.0 -140 HP Mercruiser 4 cylinder motor listed in my area for sale. I would like to know some particulars regarding the conversion for automotive use. The motor is complete with all the marine gear still attached. I have looked at several posts here regarding this issue. I find them somewhat confusing. particularly intake and exhaust manifolds, and such items as trans, flywheel etc. Is this a viable motor to consider for a vehicle such as a Model A Ford I have that needs a motor to replace the one that knocks LOUDLY! I am assuming the motor has been used in salt water as the great fishing here about mostly is. I realize the marine gear is of little use, but it is complete and cheap. Thanks for any input anyone may care to share. Mick.