Thanks for the comment and interest jNk
Generally I have plans for the car, not accidentally it is named GTA Stradale . But will see what will happen, because plans are changed from time to time... Stay tuned, I still write for old things and haven't reached to current moment . But for sure the car have to be street.

Some more pictures of the car after front brake upgrade and OZ wheels
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And now ... more parts.

New rear torsen differential
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I saw advert for this differential in ebay from one guy in Austria I think and he even have 2 or 3 differentials from what I remember. The price was good and decided, that is good to buy one.
Later I also bought new rear differential housing and I think that was from same guy... The price was good and decided, that have to buy it. Don't have picture of it, but when do some will add it here.

Apexi AVC-R electronic boost controller
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From what I have read this boost controller is very good. Two settings and also one more when is off (then by wastegate spring only), boost by gear, by rpm with 500rpm increments and other settings. Yeah they are two, but I have two turbo cars. I bought first one for my GTV, then I don't have 155 yet I think. Then there was one at good price and decided to buy one more also

And again brake calipers - Brembo 8 pistons
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Here agains 18Z. These are used on RS4 B7, RS6 C5, Phaeton V10/W12, R8, Gallardo, Murcielago. These are the 3rd model which I consider for my front upgrade, but then I have suspicious about using it on 17" (which was my limit). I bought these after brake upgrade and If I have to do it again will use these. Total piston area is smaller than 17Z calipers - 38/42/38/42 = 2840mm2. 4 pads per caliper, radially mounting so more freedom for installation. Now my calipers are a little out of disc and for this mounting best fit will be with a little bigger than 330mm discs and also with 18Z pads, which are higher, but this I understand after I already bought the discs and pads and everything was ready...