Selling As Spares Or Repair ? as i don't know what's wrong with it !

Basically Had It Rolling Roaded 2 Weeks Ago And Went For The Mot Who Said It Was Running Too Rich, Had It Adjusted To Pass Emissions And Got 13 Months Mot But The Car Was Running A Bit Crap, So Had The Mixture Etc Turned Up And The Car Was Running Normal Again, Went To Get It Re Rolling Roaded And After Several Runs The R/r Had To Be Terminated As The Car At High Revs Was Making A Tapping Type Noise ? I got the car recovered and at low revs/tickover it's not making any noise. I can't afford to get it looked at or repaired as i've spent over £7k on it in 3 months and have had enough.
If you know what you're doing or someone in the trade it could be a cheap fix ? rebuild ? or if you've got an engine ready could save time and money.
I am open to sensible offers on the car which is immaculate, please don't mess me about if you're not interested as i have had a very bad day !
Viewing/inspections etc are welcome and i'm in west london.
the car is immaculate and needs to be viewed to be appreciated, here are some details i will add more as and when.
1993 K Plate Face Lift Model With Colour Coded Tip On Rear Spoiler.
Recent Respray.
77k Fsh.
Just Had Full Service And Cambelt + All Belts Done At The Same Time.
Group A Head Gasket.
New Clutch.
13 months Mot & Tax until dec.
Mint Cloth Facelift Interior.
Mint Original Arches With No Rust Which Is Unusal For A Saff !.
Stg 3 With Cone & Dump Valve.
New Full S/s Mongoose With 4" Tail Pipe.
Rolling Road Tuned At Torque Of The Devil Made Just Over 300 Bhp @ The Wheels.
£700 Clifford.
New Tyres.
1 front gator change.
new braded fuel line.
waxoiled.
Mint Underneath.
(will not be sold with strut braces.)
There Is More But I Need To Go Through All The Paperwork.
Bad Point, Cat D On Hpi Due To Light Rear Damage (which I Have Photos Of.)
Looking For offers Or Maybe Interested In A Deal With A tidy 90spec S2 and cash my way.
The car is too good to break and could be a cheap fix for the right person, you can contact me on 07939-022271, will accept sensible offers, if you require any more pics info contact me.