From 1978 parts book
212-139 subs to 800-791 tripler kit $32.07
It dont say whats in it. Also be sure be sure there is no dash number
after -139
As for the divider get the 63- number & I will look it up. Pretty
sure the divider was different than the one for hybrids.
Also watch the CRT socket. If too much HV they arc & get toasty at the focus pin.
Now one other thing. Several sets back in the day & a few on this forum
came out perfect BUT they had jail bars. Never found why. I suspect
its from subbing the tripler to an ECG etc. Try to keep it OEM & save
the old parts.
73 Zeno

LFOD