If you have the TO-3 (metal can) output a IRF350 is the correct part. Most Gates 1 use the Plastic TO-220's IRFP-350. Ronald J. Dot'o Sr. wrote: > So do you think that the IRF350 would work in the output stage of a > Gates 1? -- Alan Alsobrook CSRE AMD CBNT St. Augustine Fl. 32086 904-829-8885 aalso at Bellsouth.net