Well a long departed friend of mine who ran nothing else but Bedfords, He replaced a S Type 4 wheeler with a 6 wheeler TK With a Primrose trailaig axle, It had a Bedford 300, Diesel engine a four speed box along with a two speed drive axle, This was 1959/60. It was bother from day one, It wouldnt pull the skin off a rice pudding He ended up just putting 10 Ton on it as it just used to give up on any steep incline, He even thouth about making it into a four wheeler, But this was just before M O T s came in and the silly transmission hand brake was a joke IMO, He sold up and retired, Regards Larry.