7 bolt install on a 6 bolt 1g

[camas90gsx]

I have a quick question,i am thinking about buying a 7 bolt engine for my 90 gsx and it originally had a 6 bolt motor.So am i going to need to do any modifications to install this 7 bolt? I was under the impression that they were identical externally just not internally so installation shouldnt be a problem.Am i on the right track here and if so could y'all let me know what i would be in for.Any help would be appreciated.Incase you are wondering why i would get a 7 bolt, its because i threw a rod on my 6 bolt and i will be getting a great deal on this 7 bolt if it works out.

 

[BogusSVO]

The flywheel/flexplate are diffrent between the two, and the intake will differ also, so get the intake for the 7 bolt with the engine.

 

[russell3123]

The driver side motor mount is also different, so u will need to cut out the timing cover to fit the 1g motor mount if its a 2g 7bolt engine