what would you recommend for connection between exsisting stock connections (excluding injector clips) in the engine bay and in the cabin? Crimp and heat shrink, crimp, solder, and heat shrink, solder and heat shrink?
For reference, I have an RTek 2.1 and will be doing a turbo 6-port with deleted emissions (6 port will still be functioning via boost control solenoid valve

). I need to replace most of the clips in the engine bay as they have fallen apart, not necessarily the electrical connections, though the wires themselves are becoming quite stiff. So if the terminals are unable to be sourced I imagine I'll have to attach them using a portion of the old harness. Too whit, I plan on running the LC1 through the same cannon plug as the engine harness thus eliminating alot of headache trying to unhook multiple things all at once.
Would including stock style connections for the injecotrs, water temp, and the other thing that escapes my mind at the moment (helps control idle depending on water temp, it's a cylinder on the back side of the intake with a similar style connection as the injectors though they come with an off centered key) be possible?