Rb25 Det Bypass Connector/valve

[Jonahs33Liner]

my 33 got abit hot the other nyt & it had lost all water, when i finally cooled it down i could see that the bypass connector/valve that is pressed in behind where the thermostat sits was cracked, there is absolutely no room under the intake manifold but i managed to get it out and get the new part, unfortunately the new part is way to hard to press back in with such little room and i was hoping someone could tell me if i can get it from the bottom and get a good swing at it to force it in or if i have to take the inlet manifold off to allow me more room? any advice or help would be muchly appreciated