Thanks for your response. Finished last night, was straightforward. Used penetrating oil and FR-3 tool to remove the Suntour freewheel. Replaced it with Shimano MF-HG37 13-28. Cleaned up the front chainrings, replaced the chain with KMC X8.93 & replaced the badly worn Suntour rear derailleur with a Shimano STX that came off a 1995 Raleigh M-80 that recently became a parts bike. Thanks for the links. I read the first one, and I've been setting up rear & front mech's for a while so no issue there. This bike shifts and looks 100% better now, I may sell it, I may not. I'll post pics after I take them later.