Feel free to message me if there are any other specific parts you are looking for.
I am more than happy to combine postage - small items are likely to be able to be sent together for £1.90 p&p (UK). Feel free to ask for a P&P quote if you would like confirmation before you bid.
Please note that the delivery charge is not just the cost of postage but also includes the following: Ebay fees, packaging, label printing, travel to & from Post Office etc.