They weigh NOTHING, under 1000kg, lightest RWD normal car there is.
The black one above was my mate Griffos, two other firends of mine have had them with 16V renault lumps in em too.
I've had two, but 360s, WAY better than 340s in my opinion as its the same car just with a decent engine, ie a 2 litre volvo engine rather than some shitbox renault lump.
And then engine transplants are for DECENT engines, ie Turbo Volvo ones go straight in instead of shite Renault ones.
Ive had 2x 360s, weld the diff, put a drivers bucket seat in, and remove the spring from the handbrake, and you got a fun little car to learn to drive properly in.
And decent engines just bolt straight to the standard engine mounts and transmission.
A guy who lives near me has a 2litre turbo in his, bolts straight in, or if you spend a bit more money and can find the 16V head lying round anywhere (we picked one up at the local scrappy last week for 50quid, but they are rare), you can do this...
Engine:
2.3 16v Turbo
T35, custom manifold
solid lifters
Forged pistons, 13mm rods
660cc injectors, adj. pressure reg, motorsport pump
3" turbo back, Blitz Nur spec box
Omex management
17psi, +300BHP
Suspension:
Bilstein coilovers (F)
Avo coilovers (R)
Whiteline ARB
Polybushes
Brakes:
285mm, Wilwood dynalite (F)
Escort discs, sierra calipers
Pedal box and bias
Driftworks hyd.handbrake
Compomotive 8x15 wheels, toyo 215/45 15
That same engine can do 600+ if you mental...