What challenges should one expect to encounter when upgrading a base 981 engine with an S or GTS engine from the same generation Cayman? I like the PDK and want to keep this transmission while an upgraded engine might come from a manual transmission. I'm assuming one cannot upgrade to the new 781 Cayman engine but if this an option this creates more possibilities for a better engine. I'm wondering if there will be any parts cost or other issues that will drive up the cost of installing besides the labor for a better engine. I'm not looking to turn the base Cayman into a track car or take on the Alabama pick up trucks that want to start a race at 80 mph. I might swap out the brake rotors and calibers if needed so braking stop performance aligns to engine performance if needed. Thanks for any advice or experience doing this.