What bike is this?

[bikedude]

Came across an unknown frame and I was wondering anyone can help identify it. It is definitely BOBish variety, late 70s/early 80s era, uniquely-cut head tube lugs, all steel with Suntour GS dropouts (rear) and unmarked fork tips. No other markings on the frame except a serial number. Looks similar to a Raleigh serial number, but the bike does not look like any Raleigh I've ever seen. It's evdently low-end tubing because it's on the heavy side. Any guesses?

 

[Unkle Krusty]

Think it might be a nervex?

 

[ps2guy123]

Could be Japanese like a Shogun or another Raleigh "Clone"

 

[Miguello]

I found what it was, but entirely by accident. It's either a Carabela or lower end Windsor. I found another one exactly like it, but has chrome head and fork lugs. It has Suntour V gt and Compe V front derailleur. Plain steel tubing guessing by the weight, but has forged drops. It has cleaned up very well so far.,,,,MG