88 Tub interchangebility

[KevinNY]

Are there any differences that would prevent a II or IIA tub fitting on a series III project other than the lenses?

[rovertek]

they all interchange and will solve your corrosion issues around the rivits on sides,there is an accumulator tank on the ser 3 which rust and you really dont it need anyways.....

[Leslie]

My SIII now has a SIIa tub on it. There are some tabs sticking up off the III chassis that bolt to the front of the tub, that the IIa tub doesn't directly use. But most of it is the same, (at least as much as any Series is, given they vary over production); and as mentioned, you dodge the issue of the rivets along the sides of the tub causing corrosion.

[brucejohn]

I agree my series III 109 tub is now on a IIa chassis. Really just a bit of tweaking to get them to mate up. Nothing I wouldn't expect on a new III chassis.