| 853 Conversion: Opinions / advice please
I am sorely tempted by the Sigma Performance 853 conversion (with 'Full Monty' service).......
Have any of you had this done to your 748, and if so what are your thoughts?
Or, please let me know your opinion if you have had a 853 conversion done (DIY or by others..)
Was it worth it?
Does it make a tremendous difference?
Should I be looking instead to buy a 996/8 (different engine characteristics...), bearing in mind that I adore the more 'revvy' nature of my 748, and I'm not going to get much for her (27k and fibreglass fairings only)?
Any words of advice/wisdom most appreciated........
Thank you | 
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