Hi John, This is Dennis Holland in Salt Lake City, UT, You have responded to some of my post on the ATIS site about my 1948 Oliver 88 with a round nose like the 70. I am restoring it and I have an 880 for parts. If I used the 880 head would I also need to change manifolds and carb? I work at Hertz Equipment Rental and you can call me there @ 800-717-3232 days or eves @ 801-486-9990. I now have this tractor completely dismantled. I am waiting for the new bearings to put the trans back together. I plan to parade this tractor and work it on a small farm. I like to use all of my tractors. Thanks , Dennis