I think you will need to ask yourself ,have you worked on hydraulic braking systems before,and do you have the correct tools to make up and flare new pipework??I would consider making up a new section of pipe and routing it around the fuel tank and securing it adequately to the body work.Dropping the fuel tank for access could open up a complete new can of worms.The price quoted does seem a little high.

From memory these have a throttle cable. I would check that this is free to move both to open and close. We have seen these cables stick usually because they have been kinked when other work is done under the bonnet and they are moved out of the way. The cable basically sticks and then jumps as the retrun spring on the throttle body overcomes the resistance causing the lurch effect. Check the linear movement of the cable at the throttle body on open and clsoed throttle. If it is the case a new throttle cable is the solution.

Might be your problem

Mini-roundabouts only work because someone is always GREEDY!.I regularly create havoc locally because at a "T"" junction near me,I(legally) use it to do a "U" turn and so have priority on all the roads.There is also another "T" near me where the roundabout has been painted so far up the side road entering,that traffic going straight across the "T" finds it easier to use the wrong side of the roundabout.I questioned the police over this and was told that as long as you do it safely they are not interested.

It's a concept car - all concept cars have ridiculous wheel sizes.

It's a good job Edd's time in fixing up the cars was free. An episode I saw the other week featured a TVR Cerbera, bought for £8,000. It needed a complete new chassis and suspension, plus other sundries, making a total parts cost of £5,500.

That episode worried me. Where would you find a second hand TVR chassis? I suspect it came from a crash damaged car. Evidenced perhaps by the fact it had to be 'sprung' into place on the body. I wonder how 'straight' the subsequent car was?...