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PeterL=> Do the small he's make much difference => on the heating ability of our cars? They make a significant difference on the older cars, they make much larger difference on the later ones. Absolutely. => Is there a great advantage to the original setup? Several, I think: * The heat system works properly. * Exhaust capacity is better matched to the (stock) engine. * The exhaust doesn't hang out like a hemorrhoid and get knocked off by speed bumps. * Proper fit and heat shielding protects your intake boot and rear apron. * OE mufflers and exhaust parts are easier to install and work around, and they last a *lot* longer. The main disadvantage of the stock setup is the big nuts that connect the muffler to the rear heat exchangers. In salty climes these can seize up and be so hard to undo that many people just give up in favor of a cheapo aftermarket muffler. The answer to this problem is to use high-quality copper antiseize when assembling this connection and service the muffler before it's gone to shreds. Those rear heat exchangers are rapidly growing in value. Steven Ayres, Prescott AZ '66 KG1600 ------------------------------------------------ To unsubscribe, E-mail to: <type3-off@vwtype3.org> For more help, see http://vwtype3.org/list/