'83 UrQ 4000rpm and NLS parts needed

[GNaas@aol.com]

     My black '83 Quattro Coupe and I are still sorting things out. The ( I'm
guessing )
fuel pump still cuts out at around 4000 RPM , but when it doesn't, the car
flat throws
you back. I think the problem might be temperature related, and hope a new
idle switch and what the hell, a new full throttle switch will cure it. The
switches are right over the turbo. All seems right with the air temp switch on
the intake, all connectors short of those in the fuse box and the ECU have
been cleaned.
     I need to obtain 2 parts : 443 906 277 idle switch and 411 927 211 full
throttle
switch. Mine are probably original and one or both might be shorting. My
dealer tells
me these are now obsolete. Does anyone have any suggestions or have these new
on hand?                  thanks    George