Re: Gear box question
It looks like a Saginaw 800 series, but they are used on dozens of cars. There is a date code stamped on the aluminum top cover, it will be in Julian date form. Julian date is a secquential date from 1 to 365 starting from the first day of the year to last day. A box stamped 142-9 would be the 142nd day of 1969. The mid to late '80's high performance Saginaw 800's can be identified by a “YA,” “WS,” or “HX” ink marking on the large domed end cap opposite where the steering column attaches. Those ink stampings have probably faded off in time. These units will reduce steering wheel revolutions from lock to lock down to 2¼ to 2¾ turns.
My '96 Jeep Grand Cherokee box has the "Z" cast in it as well. Here's a good read about Saginaw
'69 LeMans Blue Coupe, White Interior, 030" over 454, Super T10 4-Speed, Holley 4150, Pertronix Ignition
CompCams XS274S, 781 Oval Port Heads, PYPES Full 3" SS Exhaust, Hooker Comp Headers, Wilwood Calipers/MC
JGC Steering Box, Helix Uppers/Lowers, ProForged BJs, SpeedHut Gauges, MOMO Steering Wheel, Budnik 17" Wheels