056 mag ll
If your 056 is a true mag ll it should do great. The 056 was made in 3 different bore sizes I believe. 52 mm, 54 mm, and 56 mm for the mag ll. The 56 mm bore puts it about 94/95 cc's. The 056 turns less rpm than the 066/660 but should be good for milling. It is on the heavy side but...