I am extremely grateful to David Ryder at Callas RennSport and his technician team for being transparent and honest. Words cannot describe how remarkable David is with his PPI assessment of the 1982 911 SC Targa that I was planning to buy. Thank you so much David for guiding me in the right direction. In my opinion there is only one Porsche service and restoration service center in California and maybe in the USA and its Callas RennSport. David and his team save me a lot of money and grief on my potential 1982 911 SC Targa purchase with their detailed report on the inspection. Thank you David for your honesty and accurate assessment on the 911. You are the best! If you are servicing or conducting a PPI on your 911, please do yourself a favor and contact Callas RennSport and speak to David. You will be glad you did. Thank you. S. Naji