FIAT X1/9 (advert expired)

I sell Fiat X1/9 first series of 1973, chassis number very low, engine with ignition on'cam axis (the first).
Plates and original documents (green booklet) two owners including me.
The machine è in order, used only for races of classical regularity, è all original except the color (originally "sand" as that of the recent service "Ruoteclassiche"), circles (mounts of the precious CD30 Cromodora of Fiat 124 Abarth in magnesium, markets only rims sold them to 1000 euro) and the seats that were redone to original design but in genuine leather anzichè in the sky.
Installing the steering wheel at Calice Sparco (i still'original) and tripmaster with'plant already wired.
Included in the register Fiat and obviously with documentation for regularly updated CSAI.

I sell (7500â'¬) or do I permute/exchange with Lancia Delta Integrale 16V (also 8V or at the limit 4WD if beautiful) to the maximum of 1989, or with:

A112 Abarth GR1 or GrA from race with fittings and technical passport updated, possibly with past races.

or with other historical car to evaluate.