I have a square setup of rial mesh 16x8 ET11 rims. I was thinking 205/55, 225/50 or maybe 225/45 all round.
Also depends on when the 73 you purchaced was manufactured. It was a service bulletin to cover a renage of parts supplied with poor material. Could have only effected a certain range of VIN's or production months. Dad took delivery in May on a special orderd car. So it is likely his came off the assembly line in early 73.its a whole lot different when you are using something wider than a 205/55-16. i know the e3 is a little different, but NOT a lot different. on the coupe, its roll the fenders AND use laJolla camber plates
on clutches for a 73 - i bought my 73 in 1985 with 160k miles (original clutch) and i drove it another 160k over 10 years and never replaced the clutch. my point, some were very good. if you leave the clutch pedal pushed in at stop lights, might not last that long.