<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Hi there</div><div id="AppleMailSignature">The SR17 is a good choice. The other is to spend no money and no time grinding/removing/fitting by simply using the existing 6v starter and flywheel in 12v mode. The starter will spin faster and work admirably. I did this on a T1 and a 356 Porsche. No problems.</div><div id="AppleMailSignature">But, the questions were about changing the flywheel...hence my earlier response.</div><div id="AppleMailSignature">And, in this case, (puns intended),</div><div id="AppleMailSignature"></div><blockquote type="cite"><div id="AppleMailSignature"><span style="background-color: rgba(255, 255, 255, 0);"><i>No machine marks are on the internal 6 vollt swing axle bell housing. All seems to run well with 12 volt!</i></span></div><div id="AppleMailSignature"><br></div></blockquote><div id="AppleMailSignature">this seems to have been the very UN-procedure used here.</div><div id="AppleMailSignature">Hope this helps.</div><div id="AppleMailSignature">Best regards,</div><div id="AppleMailSignature">FE Meek</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">Sent from my iPhone</div><div id="AppleMailSignature"><br></div></body></html>