No probs. Ignore the loom in the box. i presume that is what you have been looking at a "bricking it"

You should only have the engine loom and a big black multiplug that basically connects with the ecu at one end. The other end should be the spade connections for the earth points and battery connections.

The 1.3 sr should be fine as there is no needless wiring to get in the way as it carb fed.
The digi dash should be easy enough to connect up, there are more power and earth connections. It is just a caso of using the GTE g/box transducer and mating up the appropriate wires for it.