I have a 1973 27' Cal T2 (early IOR 1/2 Ton) haunting the Tennessee River in eastern TN. Where are you located?
Just 175kg? I've had heavier passengers than that...of course the only time the LF wheel scraped going over bumpsI've been able to fit 7 rice bags (25kg each) : 1 in the frunk - 4 on passenger floor/seat - 1 behind each rear seat.
Total of 175kg. Good to have BC coilover while driving ~60km.