I have a 1600 dual port in my 75 bay which is running a SVDA distributor. The VW number on the dizzy is 043 905 205B, and the Bosch number on it is 0 231 168 001. I am having a mongrel of a time trying to find the correct timing information for this dizzy...I have set the timing to 32 degrees BTDC at 3000 rpm, but when it drops back to idle it is reading TDC. I have checked heaps and heaps of web pages trying to find the correct settings, and everything is so bloody contradictory....I have even rung Bosch but they had no info on it. Some sites say all SVDA dizzys on 1600's should be timed at 7.5 degrees BTDC, but if I do that my advance curve goes way too high, it pings like crazy and runs hot.....Other sites say it should be timed at 5 degrees ATDC. Anyone got the correct specs?