I can not seem to find any details on the non 125 National part of this race but I am pretty sure it was a 250 InterAMA race. It is hard to find much coverage when looking back almost 35 years. Pierre Karsmakers was there along with CZ rider Zdenek Vekly(try saying that 3 times fast!) According the AMA results Vekly won the InterAMA series that year so this must've been one of the races but I can't confirm it or who won that day. If anyone out there has some details or a better memory than me please pass some information along. The pictures from this race were again taken with the Kodak Brownie.  This makes for poor image quality but this time even worse, I could not find the negatives to scan from. These are scanned prints.  Sorry for the poor quality but at least it is something to look at from '74. This is the 250 start and Baldwin's high speed banked first turn.

Jim Weinert and the '74 KX250 factory bike looked similar to my production bike except the tank was a slightly darker green. '74 was the year of the revolution in longer travel rear suspension. Yamaha had their monoshock while all the other bikes were starting to cut frames and move the rear shocks forward for more travel. Six to seven inches of suspension may not seem like much by today's standards but it was almost double what was the norm just a year before.